| dc.description.abstract | This research aims to (1) describe process to developing a teachers' guidebook what using GeoGebra software on
solid figure materials during the Covid-19 pandemic; (2) Knowing the results of developing teacher manuals
using GeoGebra software on solid figure materials during the Covid-19 pandemic. The research of method used
is research and development. The development model uses 4-D which included stages, namely defining,
designing, developing, and distributing. The research subjects consisted of 4 mathematics teachers at SMP Negeri
1 Prajekan. The research instrument consisted of validation sheets, new interviews, and teacher activity
observation sheets. The data analysis method was carried out through the validity test, practicality test, and
effectiveness test. The results of the development of the teacher's manual in this study were the validity test
showing that the product was valid with a very high category, the product practicality test also showed that the
product could be said to be practical in a good category, and the product effectiveness test showed a good category
so that the product was also effective. In conclusion, the product of the GeoGebra software guidebook on solid
figure materials can be used by teachers to be able to assist and support teaching activities in schools, especially
during the Covid-19 pandemic | en_US |
